Can I just say that as a manufacturer of carbon and grp parts, slight fitment issues aren't always linked to poor quality. Bear in mind that moulds do slightly warp over time, this is just the case with composites, and parts to more of a degree due to being so thin.
In the case of the scuttle panel, if you've ever removed one, you'll know exactly how flexible and flimsy they are. Trying to mould one whilst keeping it straight and true to it's fitted shape is almost impossible. With this in mind it's no surprise that any 'copies' aren't ever going to fit as well as a factory original injection moulded part.
Don't get me wrong, i've seen some real shite over the years, but anyone who buys an aftermarket hand made panel and expects it to fit 100% perfectly has expectations that are too high.